package cn.bugstack.domain.strategy.service.rule.chain.factory;

import cn.bugstack.domain.strategy.model.entity.StrategyEntity;
import cn.bugstack.domain.strategy.repository.IStrategyRepository;
import cn.bugstack.domain.strategy.service.rule.chain.ILogicChain;
import lombok.*;
import org.springframework.stereotype.Service;

import java.util.Map;

/**
 * @Title: DefaultChainFactory
 * @Description:
 * @author: jiangta
 * @date: 2024/10/29 下午8:35
 * @Version: 1.0
 */
@Service
public class DefaultChainFactory {

    private final Map<String, ILogicChain> logicChainGroup;
    protected IStrategyRepository repository;

    public DefaultChainFactory(Map<String, ILogicChain> logicChainGroup, IStrategyRepository repository) {
        this.logicChainGroup = logicChainGroup;
        this.repository = repository;
    }

    public ILogicChain openLogicChain(Long strategyId) {
        StrategyEntity strategyEntity = repository.queryStrategyEntityByStrategyId(strategyId);
        String[] ruleModels = strategyEntity.ruleModels();

        //如果未配置规则，则只装填一个默认责任链
        if(ruleModels == null || ruleModels.length == 0) {
            return logicChainGroup.get("default");
        }

        // 按照配置顺序装填用户配置的责任链；rule_blacklist、rule_weight 「注意此数据从Redis缓存中获取，如果更新库表，记得在测试阶段手动处理缓存」
        ILogicChain logicChain = logicChainGroup.get(ruleModels[0]);
        ILogicChain current = logicChain;
        for (int i = 1; i < ruleModels.length; i++) {
            ILogicChain nextChain = logicChainGroup.get(ruleModels[i]);
            current = current.appendNext(nextChain);
        }

        //责任链的末尾装配默认责任链
        current.appendNext(logicChainGroup.get("default"));
        return logicChain;
    }

    @Data
    @Builder
    @AllArgsConstructor
    @NoArgsConstructor
    public static class StrategyAwardVO {
        private Integer awardId;
        private String logicModel;
    }

    @Getter
    @AllArgsConstructor
    public enum LogicModel {
        RULE_DEFAULT("rule_default","默认抽奖"),
        RULE_BLACKLIST("rule_blacklist","黑名单抽奖"),
        RULE_WEIGHT("rule_weight","权重规则");

        private final String code;
        private final String info;
    }

}